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  <title>需求</title>

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  <h2 class="title">需求</h2>
  <p class="para">
   PDFlib Lite is available as open source. However, the
   PDFlib Lite license allows free use only under certain conditions.
   PDFlib Lite supports a subset of PDFlib&#039;s functionality; please see the
   PDFlib web site for details. The full version of PDFlib is available for
   download at <a href="http://www.pdflib.com/products/pdflib-family/" class="link external">&raquo;&nbsp;http://www.pdflib.com/products/pdflib-family/</a>, but requires that
   you purchase a license for commercial use.
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   <h2 class="title">Issues with older versions of PDFlib</h2>
   <p class="para">
    Any version of PHP 4 after March 9, 2000 does not support versions
    of PDFlib older than 3.0.
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   <p class="para">
    PDFlib 4.0 or greater is supported by PHP 4.3.0 and later.
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